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要約 目的:ANCA陽性を示した強膜ぶどう膜炎2症例の症例報告。症例:症例1)74歳,女性。左眼視力低下と眼痛。強膜充血と菲薄化,snow bank様病巣,硝子体混濁,黄斑浮腫があり,血中P-ANCA(MPO-ANCA)上昇がみられた。顕微鏡的多発血管炎と診断,副腎皮質ステロイド(ステロイド)内服投与にて眼症は改善し,P-ANCAも低下した。症例2)69歳,女性。左眼視力低下と眼痛・頭痛。結膜・強膜の充血と壊死,黄斑浮腫があり,血中C-ANCA(PR3-ANCA)上昇がみられた。多発血管炎性肉芽腫症と診断,ステロイド点眼,ステロイド内服,アザチオプリン内服で眼痛改善が得られC-ANCAは低下したが,上方強膜の菲薄化は進行した。結論:ANCAに関連した強膜ぶどう膜炎では,ANCA測定が診断と治療効果判定に重要であった。
Abstract. Purpose:To report 2 cases of sclerouveitis positive for anti-neutrophil cytoplasmic antibody(ANCA). Cases and Findings:Both were females aged 69 and 74 years respectively. Both were unilaterally affected and showed signs of necrotizing sclerouveitis. One case showed vitreous opacity and snowbank lesion. Hematologically, C-ANCA(PR3-ANCA)was elevated in one case and P-ANCA(MPO-ANCA)in the other. One was diagnosed with granulomatosis with polyangiitis and the other with microscopic polyangiitis. Systemic corticosteroid in both cases and azathioprine in one led to improvement of ocular and systemic lesions and lowering of ANCA. Conclusion:Examination of ANCA in the circulating blood was essential in the diagnosis and treatment of ANCA-positive sclerouveitis.
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